<template>
	<u-popup v-model="showPop" mode="bottom" border-radius="14" :closeable="true" @close="onClose"
		:safe-area-inset-bottom="true">
		<view class="bg-white spec-contain">
			<view class="spec-header row">
				<!-- #ifndef MP-ALIPAY -->
				<custom-image class="goods-img mr20" radius="10rpx" @tap="previewImage(checkedGoods.image)"
					:src="checkedGoods.image" />
				<!-- #endif -->

				<!-- #ifdef MP-ALIPAY -->
				<image :src="checkedGoods.image" mode="widthFix" style="width: 200rpx; height: 200rpx;"
					@tap="previewImage(checkedGoods.image)" />
				<!-- <u-image width="200" height="200" border-radius="5px" :src="checkedGoods.image" @tap="previewImage(checkedGoods.image)" /> -->
				<!-- #endif -->
				<view class="goods-info flex1" v-if="!isBargain">
					<view class="ornament row">
						<price-format :first-size="46" :second-size="32" :subscript-size="32"
							:price="group ? checkedGoods.team_price : checkedGoods.price" :weight="500"></price-format>
						<view class="vip-price row" v-if="!group && !isSeckill && checkedGoods.member_price">
							<view class="price-name xxs">会员价</view>
							<view style="padding: 0 11rpx">
								<price-format :price="checkedGoods.member_price" :first-size="22" :second-size="22"
									:subscript-size="22" :weight="500" color="#7B3200"></price-format>
							</view>
						</view>
					</view>

					<view>
						<view class="sm" v-show="showStock">
							库存：{{checkedGoods.stock}}件
						</view>
						<view class="sm muted">
							<!-- <text>已选择：{{checkedGoods.spec_value_str}}，{{goodsNum}}件</text> -->
							<text>{{specValueText}}</text>
						</view>
					</view>
				</view>
				<view class="goods-info" v-else>
					<view class="xs">
						最低可砍至<text class="sm" style="color: #F95F2F;">¥{{checkedGoods.activity_price}}</text>
					</view>
					<view class="muted xs mt10">
						原价 ¥{{checkedGoods.price}}
					</view>
					<view class="sm lighter mt20">
						<text>已选择：{{checkedGoods.spec_value_str}}</text>
					</view>
				</view>
			</view>
			<view class="spec-main">
				<scroll-view style="max-height: 600rpx;" scroll-y="true">
					<view class="spec-list">
						<!-- 规格 -->
						<view v-for="(item, index) in specList" :key="index" class="spec">
							<view class="name mb20">{{ item.name }}</view>
							<text
								class="primary xs mb10">{{checkedGoods.spec_value_ids_arr[index] == '' ? '请选择'+item.name:''}}</text>
							<view class="row wrap">
								<!-- <block v-for="(specitem, index2) in item.spec_value" :key="index2" >
									<view
									  :class="['spec-item', 'sm', {checked: specitem.checked}]"
									  @tap="choseSpecItem(item.id, specitem.id)"
									>
										{{ specitem.value }}
									</view>
								</block> -->
								<view v-for="(specitem, index2) in item.spec_value" :key="index2" :class="'spec-item sm ' +
								    ( checkedGoods.spec_value_ids_arr[index] == specitem.id  ? 'checked' : '' ) + 
								    ( isDisable(specitem.id) ? 'disabled':'')" @click="choseSpecItem(index, index2)">
									{{ specitem.value }}
								</view>
							</view>
						</view>

						<!-- 保险 -->
						<template v-if="goods.safe_package !== null">
							<view class="spec">
								<view class="name mb20">
									<text>保险套餐</text>
									<text class="muted ml20 xs">可选</text>
								</view>
								<view class="row wrap">
									<view class="spec-item sm" :class="{ checked: isInsurance }"
										@tap="isInsurance = !isInsurance;">
										<text>一次性结清</text>
										<text>￥{{ goods.safe_package }}</text>
									</view>
								</view>
							</view>
						</template>
					</view>
				</scroll-view>

				<view class="good-num row-between ml20 mr20">
					<view class="label">数量</view>
					<u-number-box v-model="goodsNum" :min="1" :max="checkedGoods.stock" :disabled="disabledNumberBox">
					</u-number-box>
				</view>
			</view>
			<view class="btns row-between bg-white" :class="specValueText.indexOf('请选择') != -1 || checkedGoods.stock == 0 ? 'disabled':''">
				<!-- #ifndef MP-ALIPAY -->
				<button v-if="showAdd" class="add-cart br60 primary btn" size="lg"
					@tap="onClick('addcart')">{{yellowBtnText}}</button>
				<button v-if="showBuy" class="bg-primary br60 white btn" size="lg"
					@tap="onClick('buynow')">{{redBtnText}}</button>
				<button v-if="showConfirm" class="bg-primary br60 white btn" size="lg"
					@tap="onClick('confirm')">确定</button>
				<!-- #endif -->

				<!-- #ifdef MP-ALIPAY -->
				<view v-if="showAdd" class="add-cart br60 primary btn alipay-btn" size="lg" @tap="onClick('addcart')">
					{{yellowBtnText}}
				</view>
				<view v-if="showBuy" class="bg-primary br60 white btn alipay-btn" size="lg" @tap="onClick('buynow')">
					{{redBtnText}}
				</view>
				<view v-if="showConfirm" class="bg-primary br60 white btn alipay-btn" size="lg"
					@tap="onClick('confirm')">确定</view>
				<!-- #endif -->
			</view>
		</view>
	</u-popup>
</template>

<script>
	export default {
		data() {
			return {
				goods_periods: null,
				isInsurance: true, // 保险套餐
				checkedGoods: {
				    stock: 0
				}, //选中的
				outOfStock: [], // 缺货的
				specList: [], // 规格
				disable: [], // 不可选择的
				goodsNum: 1,
				showPop: false
			};
		},

		props: {
			show: {
				type: Boolean
			},
			goods: {
				type: Object,
				required: true
			},
			showAdd: {
				type: Boolean,
				default: true
			},
			showBuy: {
				type: Boolean,
				default: true
			},
			showConfirm: {
				type: Boolean,
				default: false
			},
			redBtnText: {
				type: String,
				default: "立即购买"
			},
			yellowBtnText: {
				type: String,
				default: "加入购物车"
			},
			group: {
				type: Boolean,
				default: false
			},
			isSeckill: {
				type: Boolean,
				default: false
			},
			showStock: {
				type: Boolean,
				default: true
			},
			disabledNumberBox: {
				type: Boolean,
				default: false
			},
			isBargain: {
				type: Boolean,
				default: false
			},
			goodsType: {
				type: Number,
			}
		},

		computed: {
			// 选择的规格参数等
			specValueText() {
				let arr = this.checkedGoods.spec_value_ids?.split(',');
				let spec_str = ''
				if (arr)
					arr.forEach((item, index) => {
						if (item == '') spec_str += this.specList[index].name + ','
					})
				if (this.checkedGoods?.stock != 0 && spec_str == '')
					return `已选择 ${this.checkedGoods.spec_value_str} ${this.goodsNum} 件`
				else
					return `请选择 ${spec_str.slice(0, spec_str.length - 1)}`
			}
		},

		watch: {
			goods(value) {
				this.specList = value.goods_spec || [];
				let goodsItem = value.goods_item || [];
				this.outOfStock = goodsItem.filter(item => item.stock == 0)
				// 找出库存不为0的
				const resultArr = goodsItem.filter(item => item.stock != 0)
				if (resultArr.length != 0) {
					resultArr[0].spec_value_ids_arr = resultArr[0].spec_value_ids.split(',');
					this.checkedGoods = resultArr[0]
				} else {
					// 无法选择
					goodsItem[0].spec_value_ids_arr = []
					this.disable = goodsItem.map(item => item.spec_value_ids.split(','));
					this.checkedGoods = goodsItem[0]
				}
			},

			specList(value) {
				if (this.checkedGoods.stock == 0) return

				const res = this.goods.goods_item.filter(item => {
					return this.checkedGoods.spec_value_ids === item.spec_value_ids
				})

				// 库存为0的规格
				const idsArr = this.checkedGoods.spec_value_ids_arr;
				const outOfStock = this.outOfStock;
				// 找出规格相同和规格不相同的余数
				const getArrGather = this.getArrResult(idsArr, outOfStock);
				// 计算出缺货的规格项
				this.disable = this.getOutOfStockArr(getArrGather, idsArr)

				if (res.length != 0) {
					let result = JSON.parse(JSON.stringify(res[0]))
					result.spec_value_ids_arr = result.spec_value_ids.split(',')
					this.checkedGoods = result;
					// 同步到父组件
					this.$emit('change', {
						detail: this.checkedGoods
					});
				}
			},

			show(val) {
				this.showPop = val
			}
		},
		methods: {
			isDisable(e) {
				const res = this.disable.filter(item => item == e)
				if (res.length != 0) return true
				else return false
			},

			onClose() {
				this.$emit('close')
			},

			onClick(type) {
				let {
					checkedGoods,
					goodsNum
				} = this;
				if (this.specValueText.indexOf('请选择') != -1) return this.$toast({
					title: this.specValueText
				})
				if (checkedGoods.stock == 0) return this.$toast({
					title: '当前选择库存不足'
				})
				checkedGoods.goodsNum = goodsNum;
				this.$emit(type, {
					detail: checkedGoods,
					insurance: this.isInsurance ? this.goods.safe_package : null
				});
			},

			// 选择规格
			choseSpecItem(index, index2) {
				const id = this.specList[index].spec_value[index2].id;

				// 无法选择
				const disable = this.disable.filter(item => item == id)
				if (disable.length != 0) return

				let idsArr = this.checkedGoods.spec_value_ids_arr;
				if (id == idsArr[index]) idsArr[index] = ''
				else idsArr[index] = id;
				//保存已选规格
				this.checkedGoods.spec_value_ids_arr = idsArr;
				this.checkedGoods.spec_value_ids = idsArr.join(',');
				// 重新渲染页面
				this.specList = [...this.specList]
			},

			// 过滤出需要进行禁用的规格
			getOutOfStockArr(arr, arr1, result = []) {
				arr.forEach(el => {
					if (el.num >= (arr1.length - 1)) {
						result.push(...el.different)
					}
				})
				return result
			},

			// 匹配出缺货库存和已选中对比结果
			getArrIdentical(arr1, arr2, arr = [], num = 0) {
				arr1.forEach(el => {
					arr2.forEach(el2 => {
						if (el == el2) {
							num += 1;
							arr.push(el)
						}
					})
				});
				return {
					num, //n个相同的
					different: this.getArrDifference([...new Set(arr)].map(Number), arr2.map(Number)),
					identical: [...new Set(arr)]
				}
			},

			// 匹配出已选择和缺库存的
			getArrResult(arr, outOfStock, result = []) {
				outOfStock.forEach(item => {
					const res = this.getArrIdentical(arr, item.spec_value_ids.split(','))
					if (res != undefined && res.length != 0) {
						result.push(res)
					}
				})
				return result
			},

			// 找出两个数组中参数不同的
			getArrDifference(arr1, arr2) {
				return arr1.concat(arr2).filter(function(v, i, arr) {
					return arr.indexOf(v) == arr.lastIndexOf(v);
				});
			},

			// 查看商品图片
			previewImage(current) {
				uni.previewImage({
					current,
					urls: [current] // 需要预览的图片http链接列表

				});
			}

			// onClick(type) {
			// 	let {
			// 		checkedGoods,
			// 		goodsNum
			// 	} = this;
			// 	checkedGoods.goodsNum = goodsNum;
			// 	this.$emit(type, {
			// 		detail: checkedGoods,
			// 		insurance: this.isInsurance ? this.goods.safe_package : null
			// 	});
			// },
		}
	};
</script>
<style lang="scss" scoped>
	.spec-contain {
		border-radius: 10rpx 10rpx 0 0;
		overflow: hidden;
		position: relative;

		.close {
			position: absolute;
			right: 10rpx;
			top: 10rpx;
		}

		.spec-header {
			padding: 30rpx;
			padding-right: 70rpx;
			align-items: flex-start;
			border: $-solid-border;

			.vip-price {
				margin: 0 24rpx;
				background-color: #FFE9BA;
				line-height: 36rpx;
				border-radius: 6rpx;
				overflow: hidden;

				.price-name {
					background-color: #101010;
					padding: 3rpx 12rpx;
					color: #FFD4B7;
					position: relative;
					overflow: hidden;

					&::after {
						content: '';
						display: block;
						width: 20rpx;
						height: 20rpx;
						position: absolute;
						right: -15rpx;
						background-color: #FFE9BA;
						border-radius: 50%;
						top: 50%;
						transform: translateY(-50%);
						box-sizing: border-box;
					}
				}
			}

			.goods-img {
				width: 180rpx;
				height: 180rpx;
				flex: none;
			}
		}

		.spec-main {
			.spec-list {
				padding: 30rpx 20rpx;

				// .spec-item {
				// 	line-height: 52rpx;
				// 	padding: 0 20rpx;
				// 	background-color: #F4F4F4;
				// 	border-radius: 60rpx;
				// 	margin: 0 20rpx 20rpx 0;

				// 	&.checked {
				//                     // border: 1rpx solid $-color-primary;
				// 		box-shadow: 0 0 0 1px $-color-primary;
				// 		background-color: #E8F6FF;
				// 		color: $-color-primary;
				// 	}
				// }

				.spec-item {
					line-height: 52rpx;
					padding: 0 20rpx;
					background-color: #F4F4F4;
					border-radius: 60rpx;
					margin: 0 20rpx 20rpx 0;
					border: 1px solid #F4F4F4;

					&.checked {
						background-color: #E8F6FF;
						color: $-color-primary;
						border-color: $-color-primary;
					}

					&.disabled {
						opacity: .5;
						text-decoration: line-through;
					}
				}

			}

		}
		
		// 底部按钮无法选择
		.disabled {
		    opacity: 0.4;
		}
		
		.btns {
			height: 120rpx;
			padding: 0 30rpx;
			margin-top: 80rpx;

			.add-cart {
				background-color: rgba(36, 163, 255, 0.1);
			}

			.btn {
				margin: 0 10rpx;
				flex: 1;
			}

			.alipay-btn {
				height: 80rpx;
				line-height: 80rpx;
				padding: 0 30rpx;
				text-align: center;
				font-size: 32rpx;
			}
		}
	}
</style>
